Why was Mikhail Gorbachev an important leader in the history of the USSR?

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on

d. a week

hope this

the answer is b hope that